Here's a travel adapter model 28699 by Vivanco. It adapts one schuko plug to GB socket. The socket in most countries in Europe is a schuko. The maximum load is 250V, 13A. Please note that a travel adapter is not a voltage or frequency converter.
Colour: Black
Size: 1.5 inches by 2 inches by 2.5 inches (4 cm by 5 cm by 6 cm)
13A fuse
Max. Load: 250V ~, 13A, 50Hz
Scope of supply: Vivanco TA D / GB travel plug schuko female black